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authorKeshava Munegowda <Keshava_mgowda@ti.com>2011-04-21 19:52:43 +0530
committerFelipe Balbi <balbi@ti.com>2011-05-02 15:29:26 +0300
commit6e3d4bec6b1e0829ed8b23be750762255f225019 (patch)
tree05d867705022dee4f6b37a808eb5e2e47cd67a88 /drivers/usb
parentd11536e4e0e99c26d33c849b44cd279cdd67b032 (diff)
downloadop-kernel-dev-6e3d4bec6b1e0829ed8b23be750762255f225019.zip
op-kernel-dev-6e3d4bec6b1e0829ed8b23be750762255f225019.tar.gz
omap:usb: add regulator support for EHCI
in case of ehci phy mode; regulator of phy should be enabled before initializing the usbhs core driver. Signed-off-by: Keshava Munegowda <keshava_mgowda@ti.com> Tested-by: Steve Calfee <stevecalfee@gmail.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/host/ehci-omap.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c
index 7e41a95..627f3a6 100644
--- a/drivers/usb/host/ehci-omap.c
+++ b/drivers/usb/host/ehci-omap.c
@@ -40,6 +40,7 @@
#include <linux/slab.h>
#include <linux/usb/ulpi.h>
#include <plat/usb.h>
+#include <linux/regulator/consumer.h>
/* EHCI Register Set */
#define EHCI_INSNREG04 (0xA0)
@@ -118,6 +119,8 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev)
struct ehci_hcd *omap_ehci;
int ret = -ENODEV;
int irq;
+ int i;
+ char supply[7];
if (usb_disabled())
return -ENODEV;
@@ -158,6 +161,23 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev)
hcd->rsrc_len = resource_size(res);
hcd->regs = regs;
+ /* get ehci regulator and enable */
+ for (i = 0 ; i < OMAP3_HS_USB_PORTS ; i++) {
+ if (pdata->port_mode[i] != OMAP_EHCI_PORT_MODE_PHY) {
+ pdata->regulator[i] = NULL;
+ continue;
+ }
+ snprintf(supply, sizeof(supply), "hsusb%d", i);
+ pdata->regulator[i] = regulator_get(dev, supply);
+ if (IS_ERR(pdata->regulator[i])) {
+ pdata->regulator[i] = NULL;
+ dev_dbg(dev,
+ "failed to get ehci port%d regulator\n", i);
+ } else {
+ regulator_enable(pdata->regulator[i]);
+ }
+ }
+
ret = omap_usbhs_enable(dev);
if (ret) {
dev_err(dev, "failed to start usbhs with err %d\n", ret);
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